Sometimes politics steps into your life. For example, you want to teach people rationality, but a religious political party just made religious education mandatory in schools. Or you invented a better way to teach maths to kids, but you can't use it, because in your country all schools must strictly follow the plans written by government. Etc. The idea is that the political power can prevent you from doing the right thing, so unless your plan is just to break the law and go to jail, you must somehow get involved with politics.

Of course, you could also just give up this specific topic, and choose some other topic where there is no direct political opposition. Or you could just write a lot about your idea, and hope that someone else will notice it and do the dirty work for you.